Eyeglass-mounting.



A. J. MORRARTY.

EYEGLASS MOUNTING.

APPLICATION FILED APR.30. 1914 1,162,184. Patented Nov. 30, 1915.

WITNESSES: M/VE/V TOR wam z I;

A TTOR/VEKS UNITED STATES PATENT OFFICE.

ANDREW J. MORRARTY, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO MARTIN- COPELAND COMPANY, OF PROVIDENCE, RHODE ISLAND.

EYEGLASS-MOUNTING.

Specification of Letters Patent.

Patented N 0v. 30, 1915.

Application filed April 30, 1914. Serial No. 835,348.

To all whom it may concern:

Be it known that I, AN DREW J. MoRRAn'rY, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Eyeglass-Mountings, of which the followingis a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to finger-piece eyeglass mountings, and with regard to certain more specific features thereof, to operating springs therefor.

One of the ob'ects of the invention is to provide a finger-piece mounting which is compact, simple and practical.

Another object of the invention is to reduce the amount of strainupon the retaining member or screw.

T he invention accordingly consists in the features of construction, combinations of elements and arrangement of parts, which will be exemplified in the method hereinafter disclosed and the construction herein after set forth, and the scope of the application of which Will be indicated in the following claims.

In the accompanying drawing, wherein is shown one of various possible embodiments of the invention, Figure l is a fragmentary plan view of a finger-operated eyeglass embodying this invention; Fig. 2 1s a view in elevation of Fig. 1; Fig. 3 is a perspective view of the operating spring enlarged; and Fig. 4 is a cross sectional V ew of the o erating spring taken on the line 4 4 of Fig. 3.

Referring now more particularly to the drawing, wherein similar reference characters refer to similar parts throughout the several views, the numeral 1 indicates a supportpreferably integral with a nose bridge 2 and also having, preferably integral therewith, lens-retaining members 3 and 4. fingeroperated nose-grip-carrying lever 5 is mounted upon the support 1 and is adapted to have a pivotal movement thereon about the retaining member 6 which is preferably in the form of a headed screw. This re taining member is threaded or otherwise se cured in the support 1. An operating spring 7 encompasses the shank portion 8 of the retaining member and opposite ends 9 and 10 of the spring 7 engage, respectively, the fixed support 1, or a part thereof, and the nose-grip-carrying end of the lever 5. The shape and construction of this operatmg spring form very important features of the present invention. It will be noted that the body portion of the spring is wound or coiled in a helical fashion, and upon reference to Fig. 4 of the drawing it will be ob vious that the spring is formed of material having a greater cross sectional dimension in the plane of its effective resiliency 2'. c. in the plane of the oscillation of the guard lever, than at right angles thereto, i. e. the plane of its axis. Heretofore springs have been used in devices of this general character which were round in cross section, and accordingly for every pitchconvolution at least as much space was required in avertical direction as would equal the cross sec tional diameter of the material. In actual practice it has been found that Where round springs were used to form the'coil quite a large number of convolutions were required to furnish the necessary pressure to urge the nose grip firmly against the nose. To employ such a number of convolutions required a great deal of pitch space, necessitating an extremely long shank on the re taining member and dividing the points of application of power by a substantially great vertical distance.

By the present invention the shank of the retaining screw may be made very short, and by making the spring in its present form, the feature of strength is not sacrificed for the reason that the spring is preferably constructed from a length of round spring wire flattened on opposite sides substantially into the shape indicated in Fig. 4 of the drawing. As many convolutions may be made with the spring of the present invention as might be made with the old style spring, yet it will be obvious that the pitch space required will be probably less than half of that required for the old style spring. A spring is. therefore, provided having substantially the same strength and substantially the same resiliency as a round wire spring of equal cross sectional area having the same number of convolutions. Nith the present spring, however, the re taining member may be made substantially shorter and the points of application of pressure of the opposite ends of the spring are brought closer to alinement, providing a much more effective and substantial device.

In making the operating spring a length of round spring wire is flattened providing two flat sides and two curved edges. These edges are curved for the reason that the wire does not lose its round character at the edges as the pressure is applied to flatten the sides. The spring is then helically coiled flatwise on a mandrel or in any suitable manner. That is, When 'c'oiled, the edges lie in the. pitch plane and the flatten'ed sides lie substantially in the plane of the circumference.

It will be seen from the foregoing that there'is provided a device which accomplishes, among others, all of the objects and advantages hereinbefore set forth.

As many changes could be made in carrying out the above method, and in the ab'ove construction, and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be in te'rpreted as illustrative and not in a limiting sense. It is also to be understood that the language used in the following claims is intended to cover all of the generic and specific features of the invention'herein described and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a device of the nature described, in combination, nose grips, and an operating spring comprising a body portion of fiat resilient material convoluted fiatwise.

2. In a finger piece eyeglass mounting, in combination, a movable nose grip and a positioning spring therefor of relatively greater crosssectional dimension in the plane of its effective resiliency than at right angles thereto.

3. In a finger piece eyeglass mounting, in combination, a movable nose'grip and a positioning spring therefor comprising a body portion of flattened resilient material with rounded edges Wound helically. and having its cross-sectional dimension transversely of its helical axis greater than its cross-sectional dimension parallel thereto.

In testimony whereof I affix my signature, in the presence of two witnesses.

ANDREW J. MORRARTY.

Witnesses:

RUSSELL W. l/Vnrorrr, FRANK KAY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

It is hereby certified that in Letters Patent No. 1,162,184, granted November 30, 1915, upon the application of Andrew J. Morrarty, of Providence, Ithode Island,

for an improvement in Eyeglass-Mountings, an error appears in the printed specification requiring correction as follows: Page 1, after line 2], insert the paragraph:

Other objects will be in part obvious and in part pointed out hm'einqfter. and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Oflice.

Signed and sealed this 11th day of January, A. D., 1916.

[SEAL] J. '1. NEWTON,

Acting Commissioner of Patents. C1. 88-50. 

